下承式钢筋混凝土系杆拱桥现浇支架设计及应用  

Design and Application of Cast-in-place Support for Bottom-bearing Reinforced Concrete Tied Arch Bridge

作　　者：李宁 LI Ning(China Railway Construction Hainan Construction Development Co.,Ltd.,Haikou 570100,China)

机构地区：[1]中铁建海南建设发展有限公司,海口570100

出　　处：《价值工程》2022年第11期60-62,共3页Value Engineering

摘　　要：本文通过下承式系杆拱桥施工,介绍了系杆拱桥现浇支架设计及应用技术。支架设计分为下承式梁部支架设计、钢筋混凝土拱圈支架设计及拱圈横梁支架设计三部分。梁部支架对盘扣支架法及贝雷梁支架法进行了安全、经济、适用性比选。通过对纵、横梁部位、拱座部位支架进行专项设计,总结系杆拱桥盘扣支架设计及应用技术。钢筋混凝土系杆拱及拱圈横梁支架一体浇筑,对支架强度、刚度进行计算,并对整体稳定性进行屈曲分析,保证系杆拱桥施工质量,对类似工程提供参考。This paper introduces the design and application technology of cast-in-place supports for tied arch bridges through the construction of bottom-supported tied arch bridges.The support design is divided into three parts:the support design of the lower bearing beam,the design of the reinforced concrete arch ring support and the design of the arch ring beam support.The beam support has compared the safety,economy and applicability of the buckle support method and the Bailey beam support method.Through the special design of the vertical,transverse beam and abutment brackets,the design and application technology of the buckle bracket of the tied arch bridge is summarized.The reinforced concrete tied arch and the arch ring beam support are cast in one piece,the strength and stiffness of the support are calculated,and the buckling analysis of the overall stability is carried out to ensure the construction quality of the tied arch bridge and provide a reference for similar projects.

关 键 词：下承式系杆拱 拼装支架 盘扣支架 整体稳定性 

分 类 号：U448.225[建筑科学—桥梁与隧道工程]